To bring stores in line, he needs to persuade owners to cooperate voluntarily.

After all, he was cooperating fully and voluntarily.

As a matter of principle, he'd never be seen going on television, public or private, and voluntarily cooperating with Russians.

The victim was not exploited, and she voluntarily cooperated with the story.

It was my hope that you'd see fit to cooperate voluntarily.

The Secretary reported to the President that news services and video nets were cooperating voluntarily in the interests of the general welfare.

Tom was impressed with how you got that delivery guy to voluntarily cooperate.

A. Health officials say they would mainly use education to seek compliance, relying on employers, building owners and the public to cooperate voluntarily.

But we don't know that Wallace voluntarily cooperated with these thugs, either.

But other villagers who did not voluntarily cooperate with the army were allowed to remain.